1427. 1) [2(x + y) – x + 6 = 0,
3x – (x - y) = 0;
3) (5x – 2y + 4) = 0,
16 (2x + 3) – y - 41 = 0;
4) (2x + 3 (x + y) – 11 = 0,
17(x + 3y) - 6x + 59 = 0.
2) [3(x+2y) –y– 27 = 0,
14(x + y) – 3x – 23 = 0;

Danielkz02    2   15.05.2020 13:24    0